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https://www.readbyqxmd.com/read/28302046/the-role-of-the-complex-usp1-wdr48-in-differentiation-and-proliferation-processes-in-cancer-stem-cells
#1
Jussara Maria Gonçalves, Mabel Mariela Rodriguez Cordeiro, Elena Riet Correa Rivero
Recently some studies identified the Basic-Helix-Loop-Helix (bHLH) transcription factor as a significant regulator for the evolution of neoplasms. The binding between bHLH proteins and DNA is restricted by heterodimerization with Inhibitors of DNA binding (ID). IDs prevent cellular differentiation, promote growth and sustain tumor development. The wide presence of stem cells in cancers suggests that genes ID are essential to cancer stem cells (CSC) progress. The enzyme Ubiquitin-specific protease 1 (USP1) is reported by deubiquitination and stabilization of IDs...
March 15, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28300841/induction-of-intestinal-stemness-and-tumorigenicity-by-aberrant-internalization-of-commensal-non-pathogenic-e-coli
#2
Upasana Sahu, Arnab Choudhury, Suhel Parvez, Subhrajit Biswas, Sudeshna Kar
Commensal Escherichia coli has been identified as a major protagonist of microbe-induced colorectal oncogenesis. Its tumour-promoting attribute is linked to the expression of DNA-damaging genotoxins. Using a constitutively invasive variant of non-pathogenic E. coli, we demonstrate that chronic presence of internalized E. coli leads to enhanced oncogenicity in colon cancer cells. Instead of genomic damage, the tumorigenic effect is mediated through an expansion of the cancer stem cell (CSC) population, likely through dedifferentiation of lineage-committed intestinal epithelial cells...
March 16, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28298340/pre-clinical-validation-of-a-selective-anti-cancer-stem-cell-therapy-for-numb-deficient-human-breast-cancers
#3
Daniela Tosoni, Sarah Pambianco, Blanche Ekalle Soppo, Silvia Zecchini, Giovanni Bertalot, Giancarlo Pruneri, Giuseppe Viale, Pier Paolo Di Fiore, Salvatore Pece
The cell fate determinant Numb is frequently downregulated in human breast cancers (BCs), resulting in p53 inactivation and an aggressive disease course. In the mouse mammary gland, Numb/p53 downregulation leads to aberrant tissue morphogenesis, expansion of the stem cell compartment, and emergence of cancer stem cells (CSCs). Strikingly, CSC phenotypes in a Numb-knockout mouse model can be reverted by Numb/p53 restoration. Thus, targeting Numb/p53 dysfunction in Numb-deficient human BCs could represent a novel anti-CSC therapy...
March 15, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28298252/reduced-circulating-stem-cells-associate-with-excess-fasting-and-post-load-nefa-exposure-in-healthy-adults-with-normal-glucose-tolerance
#4
Gian Paolo Fadini, Andrea Tura, Giovanni Pacini, Angelo Avogaro, Saula Vigili de Kreutzenberg
BACKGROUND AND AIMS: Reduced levels of circulating stem cells (CSCs) predict cardiovascular events and death, but the factors underlying variability of CSCs in healthy adults are mostly unknown. Previous studies detected associations of CSCs with glucose tolerance or insulin resistance, while the role of fatty acids has been overlooked. We herein aimed to describe in better detail the metabolic abnormalities associated with a reduced CSC level. METHODS: This was a cross-sectional study on 94 healthy male and female individuals with normal glucose tolerance, aged 18-65 years...
March 6, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28290053/targeting-cancer-stem-cells-by-using-chimeric-antigen-receptor-modified-t-cells-a-potential-and-curable-approach-for-cancer-treatment
#5
REVIEW
Yelei Guo, Kaichao Feng, Yao Wang, Weidong Han
Cancer stem cells (CSCs), a subpopulation of tumor cells, have self-renewal and multi-lineage differentiation abilities that play an important role in cancer initiation, maintenance, and metastasis. An accumulation of evidence indicates that CSCs can cause conventional therapy failure and cancer recurrence because of their treatment resistance and self-regeneration characteristics. Therefore, approaches that specifically and efficiently eliminate CSCs to achieve a durable clinical response are urgently needed...
March 13, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28289331/screening-of-breast-cancer-stem-cell-inhibitors-using-a-protein-kinase-inhibitor-library
#6
Hack Sun Choi, Dal-Ah Kim, Heesung Chung, In Ho Park, Bo Hye Kim, Eok-Soo Oh, Duk-Hee Kang
BACKGROUND: Cancer stem cells (CSCs), a subpopulation in tumors, are known to cause drug resistance, tumor recurrence and metastasis. Based on the characteristic formation of mammospheres in in vitro conditions, the mammosphere formation assay has become an essential tool for quantifying CSC activity in breast cancer research. However, manual counting of mammospheres is a time-consuming process that is not amenable to high-throughput screening, and there are occasional inaccuracies in the process of determining the mammosphere diameter...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28289330/the-heterogeneity-of-cancer-stem-like-cells-at-the-invasive-front
#7
Go J Yoshida
Cancer stem-like cells exhibit the multi-functional roles to survive and persist for a long period in the minimal residual disease after the conventional anti-cancer treatments. Cancer stem-like cells of solid malignant tumors which highly express CD44v8-10, the variant isoform of CD44 generated by alternative splicing, has a resistance to redox stress by the robust production of glutathione mediated by ESRP1-CD44v-xCT (cystine/glutamate antiporter) axis. It has been reported that CD44v and c-Myc tend to show the inversed expression pattern at the invasive front of the aggressive tumors...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28288654/non-invasive-in-vivo-imaging-of-cardiac-stem-progenitor-cell-biodistribution-and-retention-after-intracoronary-and-intramyocardial-delivery-in-a-swine-model-of-chronic-ischemia-reperfusion-injury
#8
María Collantes, Beatriz Pelacho, María José García-Velloso, Juán José Gavira, Gloria Abizanda, Itziar Palacios, Luis Rodriguez-Borlado, Virginia Álvarez, Elena Prieto, Margarita Ecay, Eduardo Larequi, Iván Peñuelas, Felipe Prósper
BACKGROUND: The safety and efficacy of cardiac stem/progenitor cells (CSC) have been demonstrated in previous preclinical and clinical assays for heart failure. However, their optimal delivery route to the ischemic heart has not yet been assessed. This study was designed to determine by a non-invasive imaging technique (PET/CT) the biodistribution and acute retention of allogeneic pig CSC implanted by two different delivery routes, intracoronary (IC) and intramyocardial (IM), in a swine preclinical model of chronic ischemia-reperfusion...
March 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28288136/oncostatin-m-promotes-cancer-cell-plasticity-through-cooperative-stat3-smad3-signaling
#9
D J Junk, B L Bryson, J M Smigiel, N Parameswaran, C A Bartel, M W Jackson
Increasing evidence supports the idea that cancer cell plasticity promotes metastasis and tumor recurrence, resulting in patient mortality. While it is clear that the tumor microenvironment (TME) contributes to cancer cell plasticity, the specific TME factors most actively controlling plasticity remain largely unknown. Here, we performed a screen to identify TME cytokines and growth factors that promote epithelial-mesenchymal plasticity, and acquisition of cancer stem cell (CSC) properties. Of 28 TME cytokines and growth factors tested, we identified Oncostatin M (OSM) as the most potent inducer of mesenchymal/CSC properties...
March 13, 2017: Oncogene
https://www.readbyqxmd.com/read/28287611/fam83a-is-amplified-and-promotes-cancer-stem-cell-like-traits-and-chemoresistance-in-pancreatic-cancer
#10
S Chen, J Huang, Z Liu, Q Liang, N Zhang, Y Jin
Cancer stem cells (CSCs), also known as tumor-initiating cells (TICs), contribute to tumorigenesis, resistance to chemoradiotherapy and recurrence in human cancers, suggesting targeting CSCs may represent a potential therapeutic strategy. In the current study, we found family with sequence similarity 83, member A (FAM83A) is significantly overexpressed and associated with poorer overall survival and disease-free survival in pancreatic cancer. Overexpression of FAM83A markedly promoted, whereas inhibition of FAM83A decreased, CSC-like traits and chemoresistance both in vitro and in an in vivo mouse model of pancreatic cancer...
March 13, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28286162/gli1-expression-in-cancer-stem-like-cells-predicts-poor-prognosis-in-patients-with-lung-squamous-cell-carcinoma
#11
Yan Cui, Chun-Ai Cui, Zhao-Ting Yang, Wei-Dong Ni, Yu Jin, Yan-Hua Xuan
PURPOSE: Glioma-associated oncogene homolog 1 (Gli1) is involved in cancer stem cell (CSC) maintenance in various tumors; however, its expression and clinical significance in lung squamous cell carcinoma (LSCC) has not been reported. In this study, we aimed to reveal the clinical significance of Gli1 in LSCC and investigate the potential of Gli1 as a CSC marker by comparing its expression with that of other stemness-related genes in LSCC. METHODS: We assessed the expressions of Gli1, LSD1, CD44, Sox9 and Sox2 by immunohistochemistry in the tissue specimens obtained from 101 patients with LSCC...
March 9, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28285878/stem-cell-factors-based-identification-and-functional-properties-of-in%C3%A2-vitro-selected-subpopulations-of-malignant-mesothelioma-cells
#12
Walter Blum, László Pecze, Emanuela Felley-Bosco, Licun Wu, Marc de Perrot, Beat Schwaller
Malignant mesothelioma (MM) is an aggressive neoplasm characterized by a poor patient survival rate, because of rapid tumor recurrence following first-line therapy. Cancer stem cells (CSCs) are assumed to be responsible for initiating tumorigenesis and driving relapse after therapeutic interventions. CSC-enriched MM cell subpopulations were identified by an OCT4/SOX2 reporter approach and were characterized by (1) increased resistance to cisplatin, (2) increased sensitivity toward the FAK inhibitor VS-6063 in vitro, and (3) a higher tumor-initiating capacity in vivo in orthotopic xenograft and allograft mouse models...
March 9, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28285569/gelatin-scaffolds-containing-partially-sulfated-cellulose-promote-mesenchymal-stem-cell-chondrogenesis
#13
Gloria Portocarrero Huang, Roseline Menezes, Richard Vincent, Willis Hammond, Louis Rizio, George Collins, Treena Livingston Arinzeh
Articular cartilage has a limited capacity to heal after damage from injury or degenerative disease. Tissue engineering constructs that more closely mimic the native cartilage microenvironment can be utilized to promote repair. Glycosaminoglycans (GAGs), a major component of the cartilage extracellular matrix, have the ability to sequester growth factors due to their level and spatial distribution of sulfate groups. This study evaluated the use of a GAG mimetic, cellulose sulfate, as a scaffolding material for cartilage tissue engineering...
March 12, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28284757/c-kit-positive-cardiac-stem-cells-and-bone-marrow-derived-mesenchymal-stem-cells-synergistically-enhance-angiogenesis-and-improve-cardiac-function-after-myocardial-infarction-in-a-paracrine-manner
#14
Luer Bao, Qingshu Meng, Yuan Li, Shengqiong Deng, Zuoren Yu, Zhongmin Liu, Lin Zhang, Huimin Fan
BACKGROUND: Stem cell transplantation offers a promising treatment for heart failure. Recent studies show that both c-kit positive cardiac stem cells (CSCs) and bone marrow-derived mesenchymal stem cells (BM-MSCs) are good candidates for stem cell therapy to treat heart failure. However, the exact mechanism of stem cell therapy in improving cardiac function of ischemic cardiomyopathy is not fully known. Our objective was to test our hypothesis that CSCs and/or BM-MSCs repair the damaged heart by boosting post-myocardial infarction (MI) angiogenesis in a paracrine manner...
March 8, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28284008/effective-and-persistent-antitumor-activity-of-her2-directed-car-t-cells-against-gastric-cancer-cells-in-vitro-and-xenotransplanted-tumors-in-vivo
#15
Yanjing Song, Chuan Tong, Yao Wang, Yunhe Gao, Hanren Dai, Yelei Guo, Xudong Zhao, Yi Wang, Zizheng Wang, Weidong Han, Lin Chen
Human epidermal growth factor receptor 2 (HER2) proteins are overexpressed in a high proportion of gastric cancer (GC) cases and affect the maintenance of cancer stem cell (CSC) subpopulations, which are used as targets for the clinical treatment of patients with HER2-positive GC. Despite improvements in survival, numerous HER2-positive patients fail treatment with trastuzumab, highlighting the need for more effective therapies. In this study, we generated a novel type of genetically modified human T cells, expressing a chimeric antigen receptor (CAR), and targeting the GC cell antigen HER2, which harbors the CD137 and CD3ζ moieties...
March 10, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28283732/comparison-of-half-dose-photodynamic-therapy-and-689-nm-laser-treatment-in-eyes-with-chronic-central-serous-chorioretinopathy
#16
Andrea Russo, Raffaele Turano, Francesco Morescalchi, Elena Gambicorti, Anna Cancarini, Sarah Duse, Ciro Costagliola, Francesco Semeraro
PURPOSE: To compare visual and anatomical outcomes between half-dose photodynamic therapy (hd-PDT) and 689 nm laser therapy (689-LT) in chronic central serous chorioretinopathy (CSC). METHODS: Forty eyes of 40 patients with symptomatic chronic CSC were randomized in a 1:1 ratio to receive either hd-PDT or 689-LT delivering 95 J/cm(2) via an intensity application of 805 mW/cm(2) over 118 s. Best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography findings were compared between the two treatment groups...
March 10, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28279831/inverse-relationship-between-the-body-mass-index-and-severity-of-carotid-siphon-calcifications-another-obesity-paradox-results-from-the-atahualpa-project
#17
Oscar H Del Brutto, Robertino M Mera
BACKGROUND AND AIMS: The importance of the obesity paradox in the intracranial vasculature has not been explored. We assessed whether the body mass index (BMI) correlates with severity of carotid siphon calcifications (CSC) in community-dwelling adults. METHODS: Using a population-based study design, Atahualpa residents aged ≥40 years underwent head computed tomography (CT) for assessment of CSC. We evaluated the association between BMI and severity of CSC (dependent variable) using regression models adjusted for demographics and cardiovascular risk factors...
February 27, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28279658/cancer-stem-like-cell-related-protein-cd166-degrades-through-e3-ubiquitin-ligase-chip-in-head-and-neck-cancer
#18
Meng Xiao, Ming Yan, Jianjun Zhang, Qin Xu, Shengcai Qi, Xu Wang, Wantao Chen
Our previous studies have identified that CD166 works as a cancer stem-like cell (CSC) marker in epithelial cancers with a large repertoire of cellular functions. However, the post-translational regulatory mechanisms underlying CD166 turnover remain elusive. Several independent studies have reported that E3 ubiquitin ligase CHIP revealed significant biological effects through ubiquitin proteasome pathway on some kinds of malignant tumors. With analyzing the effects of CHIP expressions on stem-like cell populations, we found that CHIP represses CSC characteristics mainly targeting the CSC related protein CD166 in head and neck cancer (HNC)...
March 6, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28277836/approaches-for-targeting-self-renewal-pathways-in-cancer-stem-cells-implications-for-haematological-treatments
#19
Gillian A Horne, Mhairi Copland
Self-renewal is considered a defining property of stem cells. Self-renewal is essential in embryogenesis and normal tissue repair and homeostasis. However, in cancer, self-renewal pathways, e.g. WNT, NOTCH, Hedgehog and BMP, frequently become de-regulated in stem cells, or more mature progenitor cells acquire self-renewal properties, resulting in abnormal tissue growth and tumorigenesis. Areas Covered: This review considers the conserved embryonic self-renewal pathways, including WNT, NOTCH, Hedgehog and BMP...
March 6, 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/28277541/the-foxm1-abcc5-axis-contributes-to-paclitaxel-resistance-in-nasopharyngeal-carcinoma-cells
#20
Youxiang Hou, Qianling Zhu, Zheng Li, Yongbo Peng, Xiaohui Yu, Bowen Yuan, Yijun Liu, Youhong Liu, Linglong Yin, Yuchong Peng, Zhenghua Jiang, Jinping Li, Bowen Xie, Yumei Duan, Guolin Tan, Kurban Gulina, Zhicheng Gong, Lunquan Sun, Xuegong Fan, Xiong Li
Paclitaxel is clinically used as a first-line chemotherapeutic regimen for several cancer types, including head and neck cancers. However, acquired drug resistance results in the failure of therapy, metastasis and relapse. The drug efflux mediated by ATP-binding cassette (ABC) transporters and the survival signals activated by forkhead box (FOX) molecules are critical in the development of paclitaxel drug resistance. Whether FOX molecules promote paclitaxel resistance through drug efflux remains unknown. In this study, we developed several types of paclitaxel-resistant (TR) nasopharyngeal carcinoma (NPC) cells...
March 9, 2017: Cell Death & Disease
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